512220642 has 16 divisors (see below), whose sum is σ = 1084702752. Its totient is φ = 160696640.

The previous prime is 512220619. The next prime is 512220647. The reversal of 512220642 is 246022215.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (512220647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2510784 + ... + 2510987.

It is an arithmetic number, because the mean of its divisors is an integer number (67793922).

Almost surely, 2^512220642 is an apocalyptic number.

512220642 is an abundant number, since it is smaller than the sum of its proper divisors (572482110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

512220642 is a wasteful number, since it uses less digits than its factorization.

512220642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5021793.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 512220642 is about 22632.2920182645. The cubic root of 512220642 is about 800.1149012047.

Adding to 512220642 its reverse (246022215), we get a palindrome (758242857).

The spelling of 512220642 in words is "five hundred twelve million, two hundred twenty thousand, six hundred forty-two".